TWI471635B - Electro-optical device and method of manufacturing electro-optical device - Google Patents

Description

Photoelectric device and method for manufacturing photovoltaic device

The present invention relates to an optoelectronic device, a method of manufacturing the optoelectronic device, and an electronic device.

a liquid crystal display panel having a liquid crystal layer having an anisotropic dielectric charge injected between two substrates, and adjusting an amount of light transmitted through the substrate by adjusting an electric field intensity applied to the liquid crystal layer to display a desired still image or Dynamic image display device. Such a liquid crystal display panel is excellent in weight reduction, thinning, and low power consumption, and is not limited to a mobile phone, a car navigation machine, a PDA, a personal computer, a television, and the like, and is also used as a measurement. Display devices for various types of machines such as machines, medical devices, and industrial machines.

However, the device using the liquid crystal display panel described above is not limited to the operation of the remote controller, and the still image or the moving image displayed on the liquid crystal display panel can be operated by the operation of the touch panel. The touch panel is superimposed on the front surface of the liquid crystal display panel, and displays a touch such as a bar or a key switch in response to an action selection instruction displayed on the liquid crystal display panel by tapping. The operation screen allows you to control the touch operation. In short, the content of the touch operation screen is a switch, and it is possible to operate according to an intuitive sense, and it is possible to control not only visual confirmation and operability, but also various functions. Further, as a method of the touch panel, an electromagnetic induction type, a resistance type, a capacitance type, a pressure sensitive type, and the like are known.

On the other hand, such a liquid crystal display panel can display images of a certain channel simultaneously with images of other sources by using a dual-view display technology. Further, it is known that such a dual-view display technique is not limited to the use of a two-dimensional (2D) display in which different images can be seen only in a spatially defined region, and can be used to make both sides of the viewer You can see different images in a way that displays a 3D (3D) display of the stereo image. For example, an invention in which a two-view display technology and a touch panel are combined, and a 2D or 3D display that is displayed on a liquid crystal display panel by operation of a touch panel has been proposed (for example, refer to Patent Document 1) .

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2005-71286

However, a conventional display device is provided with a light-shielding barrier or a lenticular lens, and the image is separated, and the touch panel is mounted thereon, so that the device becomes thick. In addition, there is a problem that the fitting work becomes complicated.

The present invention has been made in order to solve at least some of the aforementioned problems, and can be implemented in the following forms or application examples.

[Application Example 1] An optoelectronic device for displaying a multi-viewpoint image, comprising: a photovoltaic panel having a plurality of pixels, at least a light-transmissive first substrate, and a contact detected in response to a change in electrostatic capacitance, a touch panel including a light-transmissive second substrate; comprising: a surface formed on the first substrate side of the second substrate; and having a light-shielding property corresponding to an opening between the pixels adjacent to each other a barrier layer and a surface formed on a side of the second substrate that is apart from the first substrate, and having a light transmissive property, a detection electrode for detecting contact due to a change in electrostatic capacitance; and the second substrate and the second substrate The first substrate is fixed by sandwiching the barrier layer therebetween.

As a result, the second substrate and the first substrate are fixed by sandwiching the barrier layer therebetween, and the thickness of the device is reduced. As a result, the number of the substrates is reduced by one, and the thickness of the portion is reduced. Therefore, it is possible to provide a photovoltaic device that is small in size and lighter, and that also reduces the cost.

[Application Example 2] The photoelectric device described above is characterized in that the barrier layer-based metal film is used.

According to this, the barrier layer has the function of a conductive film, and the former conductive film is no longer required. As a result, one conductive film is reduced, and the thickness is reduced by the thickness, and further, the size and weight are reduced, and the cost is also reduced.

According to a third aspect of the invention, in the photovoltaic device, the photovoltaic panel includes a light-shielding film having a light-blocking property between the pixels adjacent to each other, and the width of the opening of the barrier layer is wider than that of the light-shielding film. The size is bigger.

As a result, the amount of light taken out from the opening portion increases, so that the brightness of the entire photovoltaic panel is improved.

[Application Example 4] The photovoltaic device according to the invention, characterized in that the photovoltaic panel includes a light-shielding film having a light-blocking property between the adjacent pixels, and a width of the opening of the barrier layer and a width of the light-shielding film The same or smaller.

According to this, the generation of crosstalk between pixels can be further reduced, and the display quality is improved.

[Application Example 5] The photovoltaic device according to the invention, characterized in that the photovoltaic panel includes a third substrate having a light transmissive property that is formed to face the first substrate at an interval, and is formed in the first A photoelectric material between the substrate and the third substrate, and a common electrode and a pixel electrode for applying a driving voltage to the photoelectric substance formed on the surface of the first substrate on the side of the photoelectric material.

Accordingly, the configuration of the photovoltaic panel becomes easy.

[Application Example 6] A method of manufacturing a photovoltaic device for displaying a multi-viewpoint image, comprising the steps of: forming a photovoltaic panel having a plurality of pixels, including at least a translucent first substrate, and forming a capacitance corresponding to the electrostatic capacitance. a step of detecting a contact panel including a translucent second substrate; and forming a surface formed on the first substrate side of the second substrate, corresponding to the adjacent pixels The step of providing the light-shielding barrier layer in the opening portion and the surface formed on the side of the second substrate away from the first substrate are translucent, and are detected in response to changes in electrostatic capacitance. a step of contacting the detecting electrode; the second substrate and the first substrate are fixed by sandwiching the barrier layer therebetween.

As a result, the second substrate and the first substrate are fixed one at a time by sandwiching the barrier layer therebetween, thereby providing a method of manufacturing an optoelectronic device that can be easily bonded.

[Application Example 7] An electronic device including the above-described light-emitting device.

According to this, since the photoelectric device is mounted, it is possible to provide an electronic device that is small in size and light in weight, and that also reduces cost.

Hereinafter, a photovoltaic device according to the present embodiment will be described based on the drawings. In addition, in each of the drawings used in the following description, in order to make each structure recognizable, the scale is appropriately changed.

(optoelectronic device)

The photoelectric device of the present embodiment includes a first pixel that is a plurality of images that display a first image of the multi-view image, and a second pixel that is a plurality of images that display the second image of the multi-view image; The image and the second image are simultaneously displayed in different directions of the liquid crystal display device. Further, in the photoelectric device of the present embodiment, the transmissive color liquid crystal display device is configured to output one painting by three sub-pixel regions for outputting light of each of r (red), g (green), and b (blue). Liquid crystal display device. Here, the display area constituting the smallest unit of display is referred to as a "secondary pixel area".

First, a schematic configuration of a liquid crystal display device of the present embodiment will be described.

Fig. 1 is a schematic configuration diagram of a liquid crystal display device 10 according to the present embodiment. As shown in FIG. 1, the liquid crystal display device 10 of the present embodiment includes a liquid crystal panel 12 as a photovoltaic panel, and a touch panel 16 bonded to the liquid crystal panel 12 via a bonding adhesive 14.

The liquid crystal panel 12 includes an element substrate 18 of an active matrix substrate, a counter substrate 20 that is disposed to face the element substrate 18 and is opposed to each other, and a liquid crystal layer that is held by the element substrate 18 and the counter substrate 20 (photoelectric Substance) 22. The liquid crystal panel 12 has a substantially rectangular frame-shaped sealing material 24 in a plan view of an outer peripheral portion of an opposing region of the opposing direction of the element substrate 18 and the counter substrate 20, whereby the sealing material 24 is bonded to the element substrate 18 and the pair. To the substrate 20. Inside the liquid crystal panel 12, an image display region is formed inside the sealing member 24. The liquid crystal panel 12 is configured to emit illumination light from the outer surface side (the side away from the liquid crystal layer 22) of the element substrate 18. The liquid crystal panel 12 includes a polarizing plate 26 provided on the outer surface side of the element substrate 18 and a polarizing plate 28 provided on the outer surface side of the counter substrate 20 (the side away from the liquid crystal layer 22).

The touch panel 16 is provided with a barrier layer 30 (light shielding pattern) on the opposite substrate 20 side. Further, the liquid crystal display device 10 includes a detecting means 32 for detecting that the finger or the like has touched the touch panel 16, and a calculating means 34 for calculating the contact coordinate.

Fig. 2 is an equivalent circuit diagram of the liquid crystal display device 10 of the present embodiment. In the liquid crystal display device 10 of the present embodiment, as shown in FIG. 2, the plurality of pixel regions SG are arranged in a matrix. Each of the plurality of pixel regions SG is formed with a pixel electrode 36 and a TFT (Thin Film Transistor) element 38 for switching the pixel electrode 36. Further, in the image display area, the plurality of data lines 40 and the scanning lines 42 are arranged in a lattice shape.

The TFT element 38 has its source connected to the data line 40, a gate connected to the scanning line 42, and a drain connected to the pixel electrode 36.

The data line 40 is configured to supply image signals S1, S2, ..., Sn supplied from a drive circuit (not shown) provided in the liquid crystal display device 10 to each pixel region. Here, the data line 40 may be supplied in the order of the line signals S1 to Sn in this order, or the plurality of signal lines 40 adjacent to each other may be supplied to each other in groups.

The scanning line 42 is configured to supply scanning signals G1, G2, ..., Gm supplied from a driving circuit (not shown) provided in the liquid crystal display device 10 to each pixel region. Here, the scanning line 42 is configured to supply the scanning signals G1 to Gm in a linear order in a specific timing pulse.

Further, in the liquid crystal display device 10, the TFT elements 38 of the switching elements are turned on for a certain period of time by the input of the scanning line signals G1 to Gm, and the image signals S1 to Sn supplied from the data line 40 are written at a specific timing. The composition of the pixel electrode 36. Next, the image signals S1 to Sn which are written to the specific level of the liquid crystal through the pixel electrodes 36 are held for a predetermined period of time between the interposed pixel electrode 36 and the common electrode 44 which will be described later.

Fig. 3 is an enlarged plan view showing a liquid crystal display device 10 relating to the present embodiment. As shown in FIG. 3, the liquid crystal display device 10 has rectangular pixels 46r, 4g, and 4b (hereinafter collectively referred to as "pixels 46") arranged in a matrix, and these are respectively displayed in red, green, and blue. . The pixels 46r, 46g, and 46b are arranged in this order in the X-axis direction in the figure, and the pixels 46 corresponding to the same color are arranged in a line in a row in the Y-axis direction. A light shielding film 48 made of a black resin is formed between adjacent pixels 46. Further, the column for the X-axis direction of the pixel 46 is referred to as a pixel column 50 below.

Each pixel 46 contributes to the display of either the first image or the second image. The pixel 46 that displays the first image is also referred to as a pixel of the first pixel 46L, and the pixel 46 that displays the second image is also referred to as a pixel 46R that is the second pixel. In the present embodiment, the pixels 46L and 46R are arranged alternately in the direction of the pixel row 50, that is, in the X-axis direction, and are arranged in a stripe shape in the Y-axis direction.

4 is a schematic cross-sectional view showing the liquid crystal display device 10 shown in FIG. As shown in FIG. 4, the liquid crystal panel 12 has the element substrate 18 and the counter substrate 20 which are bonded to each other in a frame-shaped sealing material 24 (see FIG. 1). The element substrate 18 includes a substrate body 52 as a first substrate, and the counter substrate 20 includes a substrate body 54 as a third substrate. The substrate bodies 52, 54 are light transmissive. The liquid crystal 22 is sealed between the element substrate 18 and the counter substrate 20.

On the other hand, the touch panel 16 has a substrate body 56 as a second substrate as a base. The substrate body 56 is formed to face the surface of the substrate body 54 opposite to the surface of the substrate body 54 (the side away from the liquid crystal layer 22). The substrate body 56 has light transmissivity. The substrate body 56 is formed with the barrier layer 30 on the inner surface side (the liquid crystal layer 22 side). On the inner surface side of the substrate body 56, a light-blocking barrier layer 30 having an opening 58 is formed. The substrate body 56 and the substrate body 54 are fixed by sandwiching the barrier layer 30 therebetween. The barrier layer 56 formed on the substrate body 56 has an opening 58 in a region between the pixel 46L and the pixel 46R that slightly overlaps the light shielding layer 48 as viewed in the normal direction of the liquid crystal panel 12. Here, "between pixel 46L and pixel 46R" means a region adjacent to the pixel in the direction of the right and left of the figure (that is, the negative direction of the X-axis), and the pixel 46L and the pixel 46R are adjacent to each other. The portion adjacent to the pixel 46R and the pixel 46L in this direction is excluded. In other words, the opening portion 58 is provided at a portion corresponding to the light shielding film 48 at one interval in the X-axis direction. Further, the width of the opening portion 58 is larger than the width of the light shielding film 48. When the width of the opening portion 58 is larger than the light shielding film 48 as shown in FIG. 4, the amount of light extracted from the opening portion 58 is increased, so that the brightness of the entire liquid crystal panel 12 is improved. Further, in contrast to Fig. 4, when the width of the opening portion 58 is formed to be equal to or smaller than the width of the light shielding film 48, the generation of crosstalk between the pixel 46R and the pixel 46L can be further reduced.

The barrier layer 30 is a light-shielding metal film. For example, the material of the barrier layer 30 is chromium. Further, the barrier layer 30 may be a resin. In this case, a transparent conductive film (translucent conductive film) is formed for the purpose of reducing noise from the liquid crystal panel 12. In short, when the barrier layer 30 is formed of a conductive metal film such as chromium, the transparent conductive film may not be added. Further, the location where the barrier layer 30 is formed may be between the touch panel 16 and the liquid crystal panel 12, and may be on the touch panel 16 side or on the liquid crystal panel 12 side.

The touch panel 16 includes detection electrodes 60 and 62 formed on the outer surface side (the side away from the liquid crystal layer 22) of the substrate main body 56, and a cover film 64 covering the detection electrodes 60 and 62. The detecting electrodes 60, 62 have light transmissivity.

Next, the detailed configuration of the liquid crystal display device 10 will be described with reference to FIGS. 3 and 3. The components from the first layer to the fourth layer are laminated on the inner surface side (the liquid crystal layer 22 side) of the substrate body 52 included in the element substrate 18. The element substrate 18 includes, for example, a substrate body 52 made of a light-transmitting material such as glass, quartz or plastic, and an element forming layer 66, an interlayer insulating film 68, and an electrode insulating film which are sequentially formed on the inner side of the substrate body 52. 70, and an alignment film 72. The element formation layer 66 is a laminated insulating film, a semiconductor film, and a semiconductor film, and constitutes a wiring portion such as the data line 40 or the scanning line 42 shown in FIG. 2 and the TFT element 38.

The element substrate 18 includes a TFT element 38 formed on each pixel 46, a scanning line 42 connected to the TFT element 38, a data line 40, and a pixel element substrate such as a pixel electrode 36. Further, in order to prevent short-circuiting of the constituent elements between the respective layers, the element formation layer 66 is formed between the first layer and the second layer, and the interlayer insulating film 68 is formed between the second layer and the third layer, and the third layer is formed in the third layer and the third layer. An electrode insulating film 70 is formed between the layer and the fourth layer. Further, as the switching element, instead of the three-terminal TFT element 38, a two-terminal TFD (Thin Film Diode) element or the like may be used.

The interlayer insulating film 68 is made of, for example, a light transmissive material such as acryl, and is provided to cover the element forming layer 66.

The electrode insulating film 70 is made of, for example, a light transmissive material such as SiN, and is provided so as to cover the common electrode 44 formed on the interlayer insulating film 68.

The alignment film 72 is made of, for example, a resin material such as polyimide, and is provided so as to cover the pixel electrode 36 formed on the electrode insulating film 70. Further, on the surface of the alignment film 72, an alignment treatment for restricting the initial alignment state of the liquid crystal molecules constituting the liquid crystal layer 22 is applied.

The gate electrode 38g of the TFT element 38 is formed on the first layer provided on the surface of the substrate body 52.

On the first layer, a second layer is formed by forming an element 66 with an element formed of cerium oxide or tantalum nitride. In the second layer, a semiconductor layer 38a made of amorphous germanium is formed at a position overlapping the gate electrode 38g. Further, the source region of the semiconductor layer 38a is formed in a state in which the source electrode 38s is partially overlapped, or is formed in a state in which the drain electrode 38d is partially overlapped in the drain region. The source electrode 38s is connected to the data line 40. The TFT element 38 is constituted by the semiconductor layer 38a, the source electrode 38s, the drain electrode 38d, and the gate electrode 38g.

The element substrate 18 includes a common electrode 44 disposed on the inner surface side (the liquid crystal layer 22 side) of the interlayer insulating film 68, and a pixel electrode 36 disposed on the inner surface side (the liquid crystal layer 22 side) of the electrode insulating film 70. . On the second layer, a third layer is formed by an interlayer insulating film 68 made of cerium oxide or tantalum nitride. In the third layer, a common electrode 44 made of ITO (Indium Tin Oxide) having light transmissivity is formed. The common electrode 44 is connected to a constant potential line (not shown) and is held at a constant potential.

The fourth layer is formed on the third layer by the electrode insulating film 70 made of SiN or the like. The pixel electrode 36 having a stripe-shaped portion on the fourth layer is formed so as to overlap the common electrode 44. The pixel electrode 36 passes through the contact hole 76 formed through the interlayer insulating film 68 and the electrode insulating film 70, and is connected to the drain electrode 38d of the TFT element 38.

The pixel electrode 36 includes a plurality of strip-shaped portions 36a formed in stripes at intervals, and a frame portion 36b that electrically connects the strip portions 36a to each other.

The common electrode 44 is formed to cover the interlayer insulating film 68, and is formed of, for example, a light-transmitting conductive material such as ITO. The common electrode 44 is applied with a specific constant voltage or 0 V for driving the liquid crystal layer 22, for example, or a specific potential is applied to the application period (per frame period or field). Other specific fixed-potential signals that are different from this.

When a driving voltage is applied between the common electrode 44 and the pixel electrode 36, an electric field is generated by the pixel electrode 36 toward the common electrode 44 (or from the common electrode 44 toward the pixel electrode 36). At this time, in the liquid crystal layer 22, an electric field substantially parallel to the substrate body 52, that is, a lateral electric field is generated. The liquid crystal molecules 22a change the alignment direction in a plane parallel to the substrate body 52 in accordance with this lateral electric field. As a result, the relative angles with the transmission axes of the polarizing plates 26, 28 are changed, and the display is performed in accordance with the polarization conversion function of the relative angle. Such a liquid crystal mode is referred to as an FFS mode, and the liquid crystal molecules 22a are always driven in a state in which the substrate body 52 is parallel, so that a wide viewing angle can be obtained. Further, an alignment film 72 composed of polyimide or the like is formed on the surface layer of the fourth layer.

On the outer surface side of the substrate body 52 (the side away from the liquid crystal layer 22), the polarizing plate 26 is disposed. Further, the polarizing plate 26 is disposed opposite to the backlight 78 that illuminates the liquid crystal display device 10 with light.

On the other hand, the counter substrate 20 includes a substrate main body made of a light transmissive material such as glass, quartz or plastic, and a light shielding film 48 which is sequentially laminated on the inner surface side (the liquid crystal layer 22 side) of the substrate main body 54. Corresponding to the red color filter 80r of the pixels 46r, 46g, 46b, the green color filter 80g (not shown), and the blue color filter 80b (hereinafter also referred to as "color filter" Sheet layer 80"), and alignment film 82. The color filter layer 80 is a resin that absorbs light of a specific wavelength among the incident light, and the color filter layer 80 allows the transmitted light to become a specific color (for example, red, green, or blue). Further, in a region between adjacent pixels 46, a light shielding film 48 made of a black resin having a light blocking property is formed. An alignment film 82 made of polyimide or the like is formed on the surface layers of the color filter layer 80 and the light shielding film 48. Further, an overcoat layer made of a light-transmitting resin is laminated on the color filter layer 80 and the light-shielding film 48, and an alignment film may be formed thereon.

The color filter layer 80 is disposed corresponding to each pixel region in a region partitioned by the light shielding film 48, and is configured by, for example, acryl or the like, and contains a color corresponding to the color displayed in each pixel region. material.

The substrate body 54 is processed to a thickness of about 50 μm by chemical etching, CMP (Chemical Mechanical Polishing) or the like. By this processing, the distance between the color filter layer 80 which substantially emits light and the opening portion 58 of the barrier layer 30 is adjusted, and as a result, the angle of the optical path from the color filter layer 80 to the opening portion 58 is adjusted. . Thereby, the first image and the second image can be displayed at an appropriate angle by the liquid crystal display device 10.

The light-shielding film 48 is a region in which the liquid crystal layer 22 or the like overlaps the TFT element 38, the data line 40, and the scanning line 42 in a planar view of the surface of the substrate body 56 in a plan view, and is formed in a plan view in a plan view. shape. Next, the light shielding film 48 borders the sub-pixel region (see FIG. 3).

The alignment film 82 is made of, for example, a translucent resin material such as polyimide, and is provided to cover the light shielding film 48 and the color filter layer 80. Next, an alignment treatment is applied to the inner surface side (the liquid crystal layer 22 side) of the alignment film 82.

As described above, the liquid crystal display device 10 is configured such that a voltage is applied between the strip portion 36a and the common electrode 44, and an electric field (lateral electric field) in the plane direction of the substrate is generated to drive the liquid crystal. Thereby, the pixel electrode 36 and the common electrode 44 constitute an electrode structure of an FFS (Fringe-Field Switching) system.

Further, the touch panel 16 is attached to the outer surface side of one of the substrate bodies 54 via the adhesive 14 . The touch panel 16 has the substrate body 56 as a base, and the barrier layer 30 is formed on the inner surface side of the substrate body 56. On the outer surface side of the substrate body 56, the detecting electrodes 60, 62 and the polarizing plate 28, which are light-transmitting conductive films, are formed in a substantially uniform manner in this order. ITO can be used for the detecting electrodes 60, 62. The transmission axis of the polarizing plate 28 is set so as to be orthogonal to the transmission axis of the polarizing plate 26.

The detection electrodes 60, 62 are held at a constant potential. For example, it may be a ground potential, a potential equal to the common electrode 44, a center potential of an image signal supplied to the data line 40, a non-selection potential of a scanning signal applied to the scanning line 42, or a driving means for driving the liquid crystal display device 10. A certain potential of any of the logic potentials.

Fig. 5 is a view showing the detecting electrodes 60, 62 of the present embodiment. As shown in FIGS. 4 and 5, the touch panel 16 includes detection electrodes 60 and 62, a pull-out wiring 84, a terminal portion 86, detection electrodes 60 and 62, and a pull-out wiring formed on the outer surface side of the substrate body 56. 84. And a cover film 64 covering the terminal portion 86.

As shown in FIG. 5, the detecting electrodes 60 and 62 are formed in a plurality of detection regions A that overlap with the image display region (there are five in each of the mode detecting electrodes 60 and 62), for example, light transmittance such as ITO. Made of conductive material. Next, the detecting electrodes 60 and 62 are formed along the X-axis direction (first direction) in the direction of one side of the substantially rectangular detection region A in plan view. Further, the detecting electrode 60 and the detecting electrode 62 are alternately arranged in the Y-axis direction (second direction) which is orthogonal to the X-axis direction along the other side of the detection region.

The detecting electrodes 60, 62 have a shape having a substantially right-angled triangle shape in plan view, and their shapes are the same. The detection electrode 60 is parallel to the X-axis direction and the Y-axis direction, and the oblique side is inclined by the X-axis direction and the Y-axis direction, and is oriented toward the Y-axis direction (+Y side). form. Next, the detecting electrode 60 is gradually narrowed in width from one side (-X side) toward the other side (+X side) in the axial direction.

On the other hand, the detecting electrode 62 is parallel to the X-axis direction and the Y-axis direction, and the oblique side is inclined by the X-axis direction and the Y-axis direction to the other side in the Y-axis direction (- The way of the Y side) is formed. Next, the detecting electrode 62 gradually widens as it widens from the -X side in the X-axis direction toward the +X side.

Here, among the plurality of detection electrodes 60, the detection electrodes 60A to 60E are sequentially referred to as being disposed closest to the -Y side. Further, among the plurality of detection electrodes 62, the detection electrodes 62A to 62E are sequentially referred to as being disposed closest to the -Y side.

Further, among the detection electrodes 60 and 62 having a substantially right-angled triangular shape, the detection electrode pairs 88 are formed by the adjacent two detection electrodes 60 and 62 so that the oblique sides thereof face each other in the Y-axis direction. That is, the ratio of the width of the pair of detection electrode pairs 88 to the width of the other detection electrode 62 is changed from the -X side toward the +X side in the X-axis direction. That is, the ratio of the width of the detecting electrode 60 of the detecting electrode pair 88 is gradually decreased from the -X side toward the +X side in the X-axis direction, and the ratio of the wide width of the detecting electrode 62 is gradually increased.

Next, the shape of the detecting electrode pair 88 is approximately rectangular in plan view since the oblique sides of the detecting electrodes 60 and 62 face each other. Further, since the detection electrodes 60, 62 are formed in five, respectively, the pair of detection electrodes 88 are formed in five pairs.

Here, among the pair of detection electrode pairs 88, the detection electrode pairs 88A to 88E are sequentially referred to as the side disposed on the -Y side. That is, the detecting electrode pair 88A is formed by the detecting electrodes 60A, 62A, the detecting electrode pair 88B is formed by the detecting electrodes 60B, 62B, and the detecting electrode pair 88C is formed by the detecting electrodes 60C, 62C, and the detecting electrodes 60D, 62D are formed. The detecting electrode pair 88D forms a detecting electrode pair 88E by the detecting electrodes 60E, 62E.

Further, as shown in FIG. 5, the X coordinate of the coordinate in the X-axis direction and the Y coordinate of the coordinate in the Y-axis direction detectable in the detection region A having a substantially rectangular shape in plan view are 0 or more and 1 or less, and 1 or more and 5 or less. . Here, the value of the X coordinate corresponding to the end side on the -X side of the detection area A corresponds to 0, and the value of the X coordinate corresponding to the end side of the +X side of the detection area A corresponds to 1. Further, the value of the Y coordinate corresponding to the center line parallel to the X-axis direction of the detecting electrode pair 88A is 1, and the value of the Y coordinate corresponding to the center line parallel to the X-axis direction of the detecting electrode pair 88B is 2, and the detecting electrode The value of the Y coordinate corresponding to the center line parallel to the X-axis direction of 88C is 3, the value of the Y coordinate corresponding to the center line parallel to the X-axis direction of the detecting electrode pair 88D is 4, and the detection electrode pair 88E The value of the Y coordinate corresponding to the center line parallel to the X-axis direction is 5.

As shown in FIG. 5, the drawn wiring 84 is formed along the outer periphery of the opposite substrate 20 on the outer surface side of the substrate body 56 together with the detecting electrodes 60, 62, and the detecting electrodes 60, 62 are connected to the terminal portion 86. Further, the pull-wound wiring 84 is made of, for example, a conductive material having a smaller resistance value than ITO such as Al (aluminum). Next, the drawn wiring 84 connected to the detecting electrode 60 is connected to the detecting electrode 60 at the end on the -X side of the detecting electrode 60. Further, the drawn wiring 84 connected to the detecting electrode 62 is connected to the detecting electrode 62 at the end on the +X side of the detecting electrode 62.

The terminal portion 86 is formed on the outer surface side of the substrate body 56 together with the detecting electrodes 60, 62 or the drawn wiring 84, and is external to the -Y side of the detection region A, and is connected to the outside of the opposite substrate 20. Detection means 32 (refer to Fig. 1). Next, an AC voltage from the detecting means 32 is applied to the detecting electrodes 60, 62 through the terminal portion 86.

The detecting means 32 applies an alternating current voltage to the detecting electrodes 60, 62 through the terminal portion 86, and detects that the electrostatic capacitance between the detecting electrodes 60, 62 and the reference electrode is not in contact with the finger or the like by the polarizing plate 26 and the cover film 64. The difference between the detected voltage and the detected voltage in a state in which the finger is in contact with each other is detected as the amount of change in the capacitance.

As shown in FIG. 1 , the calculation means 34 includes an X coordinate calculation means for calculating the coordinates in the X-axis direction based on the amount of change in the capacitance of each of the detection electrodes 60 and 62 (see FIG. 4 ) of the detection means 32 (the first coordinate calculation) The means 34A and the Y coordinate calculation means (second coordinate calculation means) 34B for calculating the coordinates in the Y-axis direction. Further, the method of calculating the coordinates of the calculation means 34 will be described in detail later. The coordinate input device 90 is configured by the touch panel 16, the polarizing plate 28, the detecting means 32, and the calculating means 34.

Referring back to Fig. 4, the polarizing plate 28 is formed, for example, by using a film formed of an insulating material of PVA (polyvinyl alcohol) as a base. Similarly to the polarizing plate 28, the polarizing plate 26 is formed of a film of PVA. Further, a protective film (not shown) that protects the polarizing plate 26 may be provided on the outer surface side (the side away from the liquid crystal layer 22) of the polarizing plate 26. Further, the polarizing plate 26 is provided such that its transmission axis is approximately orthogonal to the polarizing plate 28.

Here, a quarter-wavelength plate may be disposed on the inner surface side (the liquid crystal layer 22 side) of the polarizing plate 26. By arranging the quarter-wavelength plate, it is possible to prevent external light incident from the outside of the polarizing plate 26 from being reflected by the element substrate 18 and being re-emitted. Further, the transmission axis of the polarizing plate 26 is appropriately changed in accordance with the 1/4 wavelength plate.

Further, an optical compensation film (not shown) may be disposed on one or both of the polarizing plates 26 and 28 (on the liquid crystal layer 22 side). By arranging the optical compensation film, the phase difference of the liquid crystal layer 22 in the case of the squint liquid crystal display device 10 can be compensated, and the light leakage increase contrast can be reduced. As the optical compensation film, a combination of a negative uniaxial medium and a positive uniaxial medium is used, or a biaxial medium having a refractive index of nx>nz>ny in each direction is used.

(Operation of liquid crystal display device)

Next, the operation of the liquid crystal display device 10 having the above configuration will be described. Light incident on the outer surface side of the element substrate 18 is converted into linearly polarized light by the polarizing plate 26, and is incident on the liquid crystal layer 22.

Here, in the case where the voltage between the pixel electrode 36 and the common electrode 44 is not applied (OFF), the linearly polarized light incident on the liquid crystal layer 22 is the same polarization state as when the liquid crystal layer 22 is incident. It is emitted by the liquid crystal layer 22. Then, since the linearly polarized light is orthogonal to the transmission axis of the polarizing plate 28, the polarizing plate 28 is blocked, and the pixel region is darkly displayed.

On the other hand, when the voltage is applied to the ON state between the pixel electrode 36 and the common electrode 44, the linearly polarized light incident on the liquid crystal layer 22 is given a specific phase difference by the liquid crystal layer 22 (1). The phase difference of /2 wavelength parts is converted into linearly polarized light orthogonal to the polarization direction at the time of incidence, and is emitted by the liquid crystal layer 22. Then, since the linearly polarized light is parallel to the transmission axis of the polarizing plate 28, the polarizing plate 28 is visually recognized as the display light, and the sub-pixel region is brightly displayed.

Then, when the polarizing plate 28 is touched by a human finger in a state where an alternating voltage is applied to the detecting electrodes 60 and 62, the electrostatic capacitance between the detecting electrodes 60, 62 and the finger is formed by the polarizing plate 28 and the cover film 64. . Therefore, the current flows by the detecting electrodes 60, 62 through the electrostatic capacitance. The detecting means 32 detects the amount of change in the current as the amount of change in the electrostatic capacitance by the electrostatic capacitance being formed. Next, the calculation means 34 calculates the contact position of the finger or the like of the detection area A from the amount of change in the capacitance detected by the detection means 32.

Thereafter, the image displayed on the image display area is switched based on the calculated information of the contact position, or the finger track moving on the surface of the polarizing plate 28 is displayed as an image on the image display area.

Here, a method of calculating the contact position will be specifically described. 6 is an explanatory view showing a method of calculating the contact position in the present embodiment, and FIG. 7 is a flowchart showing a method of calculating the contact position in the present embodiment. Further, the symbol T shown in Fig. 6 shows the contact area with respect to the finger of the polarizing plate 28.

First, the detecting means 32 (see Fig. 1) detects the amounts of change CL and CR of the electrostatic capacitance of the respective detecting electrodes 60, 62 (step S100 of Fig. 7). Here, the detecting means 32 detects the electrostatic capacitance detected by each of the detecting electrodes 60, 62 in a reference state in which the finger or the like is not in contact with each other, and detects each of the detecting electrodes 60, 62 in a state in which the finger or the like is brought into contact with each other. The difference in electrostatic capacitance.

In addition, the X coordinate calculation means 34A (see FIG. 1) calculates the sum ΣCL of the sum of the capacitances CL detected by the respective detection electrodes 60 (step S110), and calculates the capacitance detected by each detection electrode 62. The sum CR of the sum of the changes CR (step S120). Next, the X coordinate calculation means 34A calculates the ratio of ΣCL to ΣCR (step S130), and calculates the X coordinate (step S140).

That is, for example, as shown in Fig. 6, when the ratio of ΣCL to ΣCR is 1:3, the ratio of ΣCL to (ΣCL+ΣCR) is 1:4, so the X coordinate calculation means 34A calculates the value of the X coordinate to be 0.75.

On the other hand, the Y coordinate calculation means 34B (see FIG. 1) calculates the amount of change CP of the capacitance of each of the detection electrode pairs 88A to 88E (step S150). Next, a centroid calculation for calculating the position of the center of gravity of the change in the electrostatic capacitance of the pair of detection electrodes 88A to 88E is performed (step S160). Here, the Y coordinate is calculated using the following formula (1) (step S170).

Y=Σ(n×CP)/ΣCP.........(1)

Here, the n×CP is a product of the amount of change CP of the electrostatic capacitance of the pair of detection electrodes 88 and the value of the Y coordinate corresponding to the center line of the width direction of the pair of detection electrodes 88.

That is, for example, as shown in FIG. 6, the change amount CP1 of the electrostatic capacitance of the detecting electrode pair 88A is 0, and the change amount CP2 of the electrostatic capacitance of the detecting electrode pair 88B is 1, to detect the change in the electrostatic capacitance of the electrode pair 88C. The amount CP3 is 4, and the amount of change CP4 of the electrostatic capacitance of the detecting electrode pair 88D is 2, and the amount of change CP5 of the electrostatic capacitance of the detecting electrode pair 88E is 0. At this time, (1 × 0 + 2 × 1 + 3 × 4 + 4 × 2 + 5 × 0) / (0 + 1 + 4 + 2 + 0) = 3.14. Therefore, the Y coordinate calculation means 34B calculates the value of the Y coordinate as 3.14. As described above, the contact position of the finger is calculated from the values of the X coordinate and the Y coordinate.

Fig. 8 is a view showing a relationship between a cross-sectional structure of the liquid crystal display device 10 of Fig. 3 and a viewing angle and a display visually confirmed at the viewing angle. This drawing is drawn by the light of the opening portion 58 disposed between the pixel 46b (pixel 46R) and the pixel 46r (pixel 46L). The behavior of light passing through the other opening portions 58 is also the same as in this figure. Moreover, in this figure, in order to facilitate the description of the optical path, the substrate body 54 is made thick, and the components of the element substrate 18 are omitted.

The display light from the pixel 46r is refracted by the opening 58 when incident on the air layer, and the angular range of the symbol 92r is visually confirmed. Similarly, the display light from the pixel 46g and the pixel 46b is visually confirmed by the angular range of the symbols 92g and 92b, respectively. The angular range 92r and the angular range 92b, the angular range 92r and the angular range 92g, the angular range 92b and the angular range 92g are partially repeated.

As a result, in the angular range VL distributed from the front to the left, the display light from the pixel 46b is shielded by the barrier layer 30 without being visually recognized, and only the display light from the pixel 46r is visually confirmed. On the other hand, in the angular range VR distributed from the front to the right, the display light from the pixel 46r is shielded by the barrier layer 30 without being visually recognized, and only the display light from the pixel 46b is visually confirmed. In other words, in the angle range VL, only the first image of the pixel 46L is visually recognized, and in the angular range VR, only the second image of the pixel 46R is visually recognized. Thus, the liquid crystal display device 10 can display two different images in the angle ranges VL and VR. The angular range VL, VR is about 30°.

In this manner, the liquid crystal display device 10 is a so-called two-screen display that is viewed obliquely in the left-right direction, and therefore must have a wide viewing angle. Therefore, the transverse electric field mode (FFS) is employed as described above.

Further, in the angular range VC of the front direction in which the angle ranges VL and VR are sandwiched, the display lights from the pixels 46b and the pixels 46r are visually confirmed. That is, the angle range VC is a mixed area in which both the first image and the second image are displayed. This is because the width of the opening portion 58 in the X-axis direction is larger than the width of the light-shielding film 48 in the X-axis direction.

In the liquid crystal display device 10 described above, the barrier layer is formed on the second substrate, and the barrier layer is sandwiched between the second substrate and the third substrate, whereby the thickness of the device is reduced. As a result, the number of the substrates is reduced by one, and the thickness of the portion is reduced. Therefore, it is possible to provide a reduction in size and weight, and also to reduce the cost, and the detection electrodes 60, 62 are formed on the touch panel 16. Has the following characteristics. In other words, the electrodes for driving the liquid crystal 22 are not formed on the counter substrate, and the static electricity generated in the touch panel 16 and the counter substrate 20 can be removed through the detecting electrodes 60 and 62, thereby preventing static electricity from accumulating on the substrates. . Thereby, it is possible to perform high-quality display with few defects in the display of static electricity.

(Method of Manufacturing Liquid Crystal Display Device)

Further, the liquid crystal display device 10 described above is manufactured through the steps of FIG.

Fig. 9 is a flow chart showing a method of manufacturing a liquid crystal display device according to the present embodiment. First, the constituent elements described above are laminated on the inner surface side (the liquid crystal layer 22 side) of the substrate bodies 54 and 52 (step S200). Specifically, the common electrode 44 and the pixel electrode 36 are formed on the substrate body 52.

Next, after bonding the two substrate bodies through the sealant, the liquid crystal 22 is sealed between the substrate bodies (step S210). Specifically, the substrate body 54 having light transmissivity is formed such that the common electrode 44 and the pixel electrode 36 are arranged to face each other with a space therebetween. Thereby, the liquid crystal layer 22 is formed between the substrate body 52 and the substrate body 54.

Next, it is processed to a thickness of 50 μm by chemical etching or chemical mechanical polishing (CMP) or the like (step S220).

Next, the substrate body 56 (touch panel 16) on which the barrier layer 30 and the detecting electrodes 60 and 62 are formed in advance is bonded to the substrate body 54 (opposing substrate 20) via the adhesive 14 (step S230). Specifically, on the first surface of the substrate body 56, the detection electrodes 60 and 62 which are translucent and which are in contact with each other are detected in response to changes in electrostatic capacitance. As a result, the second surface opposite to the first surface of the substrate main body 56 is formed to have a light-shielding property corresponding to the opening portion 58 between the first pixel 46L and the second pixel 46R adjacent to each other. The barrier layer 30. Thereafter, the second surface of the substrate main body 56 and the outer surface side of the substrate main body 54 are sandwiched therebetween, and are fixed so as to be opposed to each other. Finally, the polarizing plates 26, 28 are disposed, and the backlight 78 is mounted to be completed (step S240).

According to such a manufacturing method, it is not necessary to directly form the detecting electrodes 60, 62 directly on the substrate body 54 which is thinly processed, so that it is not easy to damage the substrate body 54. Then, by bonding the touch panel 16 including the detecting electrodes 60 and 62 to the counter substrate 20, static electricity generated in the counter electrode 20 and the touch panel 16 can be removed, so that static electricity can be prevented from being accumulated on these substrates.

(Example of mounting on an electronic device)

Fig. 10 is a perspective view showing an example of an electronic apparatus relating to the present embodiment. The liquid crystal display device 10 described above can be mounted on a liquid crystal display device 100 for a car navigation system as an electronic device, for example, as shown in FIG. In the liquid crystal display device 100, the liquid crystal display device 10 incorporated in the display unit 102 can simultaneously display two images in different directions. For example, an image of a map can be displayed in the driver's seat while an image of the movie is displayed in the front passenger seat.

The menu buttons 104, 106, 108 are displayed on the image of the map on the driver's seat side. Various menus can be assigned to these menu buttons. For example, an email may be dispatched at menu button 104, a browser may be dispatched at menu button 106, and a drawing software may be dispatched at menu button 108. Just touch the menu button to start the desired software.

Further, on the image of the movie on the front passenger seat side, the menu buttons 110, 112, and 114 are displayed. Various menus can be assigned to these menu buttons. For example, a menu can be dispatched to the menu button 110, a zoom function can be assigned to the menu button 112, and an input switching function can be assigned to the menu button 114. Just touch the menu button to perform the desired operation.

Further, the liquid crystal display device 10 can be used in various electronic devices such as a portable computer, a digital camera, a digital camera, an in-vehicle device, and an audio device in addition to the liquid crystal display device 100 described above.

Although the embodiment has been described above, for example, the following examples can be considered as a modification.

It is not limited to a flat panel type liquid crystal display device, and can also be applied to a cathode ray tube type display device. Further, the flat panel type is not limited to a liquid crystal display panel, and may be applied to a plasma display panel or an organic EL (Erectronic Luminescence) display. In addition, it is not limited to a car navigation machine, and it is not limited to a device such as a mobile phone, a PDA, a personal computer, or a television, and is applicable to a measurement device or a medical device. And various types of machines such as industrial machines. Further, the present invention is not limited to the two-dimensional (2D) display, and can be applied to display a three-dimensional (3D) display of a stereoscopic image so that different images can be seen on both sides of the viewer A or B.

10. . . Photoelectric device (liquid crystal display device)

12. . . LCD panel (photoelectric panel)

14. . . Adhesive

16. . . Touch panel

18. . . Component substrate

20. . . Counter substrate

twenty two. . . Liquid crystal layer (liquid crystal) (photoelectric substance)

22a. . . Liquid crystal molecule

twenty four. . . Sealing material

26,28. . . Polarizer

30. . . Barrier layer

32. . . testing method

34. . . Calculation means

34A. . . X coordinate calculation means

34B. . . Y coordinate calculation means

36. . . Pixel electrode

36a. . . Band

36b. . . Frame

38. . . TFT element

38a. . . Semiconductor layer

38d. . . Bipolar electrode

38g. . . Gate electrode

38s. . . Source electrode

40. . . Data line

42. . . Scanning line

44. . . Common electrode

46. . . Pixel

48. . . Sunscreen

50. . . Picture column

52. . . Substrate body (first substrate)

54. . . Substrate body (third substrate)

56. . . Substrate body (second substrate)

58. . . Opening

60,62. . . Detection electrode

64. . . Cover film

66. . . Component forming layer

68. . . Interlayer insulating film

70. . . Electrode insulating film

72. . . Orientation film

76. . . Contact hole

78. . . Backlight

80. . . Color filter layer

82. . . Orientation film

84. . . Pull wiring

86. . . Terminal part

88. . . Detecting electrode pair

90. . . Coordinate input device

92. . . symbol

100. . . Liquid crystal display device

102. . . Display department

104,106,108,110,112,114. . . Menu button

Fig. 1 is a schematic configuration diagram of a liquid crystal display device according to the present embodiment.

Fig. 2 is an equivalent circuit diagram of a liquid crystal display device of the present embodiment.

Fig. 3 is an enlarged plan view showing a liquid crystal display device of the present embodiment.

Fig. 4 is a schematic cross-sectional view showing the liquid crystal display device shown in Fig. 3.

Fig. 5 is a view showing a detecting electrode relating to the present embodiment.

Fig. 6 is an explanatory view showing a method of calculating a coordinate relating to the present embodiment.

Fig. 7 is a flow chart showing a method of calculating the coordinates relating to the present embodiment.

Fig. 8 is a view showing a relationship between a cross-sectional structure of the liquid crystal display device of Fig. 3 and a viewing angle and a display visually confirmed at the viewing angle.

Fig. 9 is a flow chart showing a method of manufacturing a liquid crystal display device according to the present embodiment.

Fig. 10 is a perspective view showing an example of an electronic apparatus relating to the present embodiment.

10. . . Photoelectric device (liquid crystal display device)

12. . . LCD panel (photoelectric panel)

14. . . Adhesive

16. . . Touch panel

18. . . Component substrate

20. . . Counter substrate

twenty two. . . Liquid crystal layer (liquid crystal) (photoelectric substance)

22a. . . Liquid crystal molecule

26,28. . . Polarizer

30. . . Barrier layer

36. . . Pixel electrode

36a. . . Band

36b. . . Frame

38. . . TFT element

38a. . . Semiconductor layer

38d. . . Bipolar electrode

38g. . . Gate electrode

38s. . . Source electrode

44. . . Common electrode

46b, 46r. . . Pixel

48. . . Sunscreen

52. . . Substrate body (first substrate)

54. . . Substrate body (third substrate)

56. . . Substrate body (second substrate)

58. . . Opening

60,62. . . Detection electrode

64. . . Cover film

66. . . Component forming layer

68. . . Interlayer insulating film

70. . . Electrode insulating film

72. . . Orientation film

76. . . Contact hole

78. . . Backlight

80b. . . Blue color filter

80r. . . Red color filter

82. . . Orientation film

Claims (6)

An optoelectronic device for displaying a multi-viewpoint image, comprising: a photovoltaic panel having a plurality of pixels, at least comprising a translucent first substrate; wherein the contact is detected to be transparent according to a change in electrostatic capacitance The touch panel of the second substrate is formed of a third substrate having a light transmissive property so as to be disposed opposite to each other on the first substrate, and is formed between the first substrate and the third substrate. a substance is formed on a surface of the second substrate on the first substrate side, and a barrier layer having a light-shielding opening is provided between the pixels adjacent to each other, and is formed on the second substrate. The surface on the first substrate side is translucent, and a detection electrode that detects contact due to a change in electrostatic capacitance is disposed on the side of the third substrate that is close to the first substrate, and is adjacent to each other. a color filter layer that emits different display lights between the pixels, and a light-shielding light-shielding film formed between the color filter layers formed on the third substrate; the second substrate and the second substrate 3 substrate, based on the aforementioned barrier layer interposed therebetween is fixed, In one direction, the opening portion is provided at a portion corresponding to the light shielding film at intervals of one. The photovoltaic device of claim 1, wherein the barrier layer is a metal film. The photovoltaic device according to claim 1 or 2, wherein the photovoltaic panel includes a light shielding film having a light blocking property between the pixels adjacent to each other, and the width of the opening portion of the barrier layer is larger than the light shielding film The width is bigger. The photovoltaic device according to claim 1 or 2, wherein the photovoltaic panel includes a light-shielding film having a light-blocking property between the pixels adjacent to each other, a width of the opening portion of the barrier layer, and the light shielding film The width is equal or smaller. The photovoltaic device according to claim 1 or 2, wherein the photovoltaic panel includes a common electrode and a pixel electrode that apply a driving voltage to the photoelectric substance formed on a surface of the first substrate on the side of the photoelectric material. A method for manufacturing a photovoltaic device, which is characterized in that a method for manufacturing a photovoltaic device that displays a multi-view image has a step of forming a photovoltaic panel having a plurality of pixels and including at least a light-transmissive first substrate, and forming a static electricity layer a step of detecting a contact of the touch panel including the light transmissive second substrate by changing a capacitance; And a step of forming a barrier layer having a light-shielding opening between the pixels adjacent to each other, and forming the surface formed on the surface of the second substrate a step of the second substrate facing away from the surface of the first substrate, having a light transmissive property, and detecting a contact detecting electrode in response to a change in electrostatic capacitance; wherein the photovoltaic panel includes: an interval between the first substrate and the first substrate a third substrate having a light transmissive property formed in an arranged manner, and a photoelectric substance formed between the first substrate and the third substrate is disposed on a side of the third substrate close to the first substrate a color filter layer that emits different display light between the adjacent pixels, and a light-shielding light-shielding film formed between the color filter layers formed on the third substrate; The substrate and the third substrate are fixed by sandwiching the barrier layer therebetween, and the opening is provided in a portion corresponding to the light shielding film at intervals of one in one direction.